Ferdinand f



(No Model.)

P. F. P. UNOKRIGH.

DIE FOR MAKING HOBS.

No. 278,203; Patent d-Ma 22,1883.

W 2 Q 4M WITNESSES ATTORNEYS.

' UNITED STATES PATENT OFFICE.

FERDINAND F. P. UNOKBICH, OF SANDUSKY, OHIO, ASSIGNOR T OSCAR JETTINGER, OF SAME PLACE.

DIEFOR MAKING HOES.

SPECIFICATION forming part of Letters Patent .No. 278,203, dated May 22, 1883.

' Application filed May 20, 1882. (No model.)

To all whom it may concern Be it known that I, FERDINAND, F. P. UNoK- RICH, of Sandusky, Erie county, Ohio, have invented a new and useful Improvement in the Manufacture-of Hoes, of which the following is a full, clear, and exact description.

This invention relates to the eyes of hoes and the manner ofmaking the same and means therefor.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a face view of a hoe blank or blade as ready for the eye to be formed in or out of it. Fig. 2 is a face view of a lower die for forming the eye of the hoe. Fig. 3 is a" vertical section of upper and lower dies, a punch for operation in connection therewith, and a hoe blank or blade as about having the eye formed out of it; and Fig. 4 is a side or edge view of the hoe-blade, with the eye as produced by myimprovement. Fig. 5 is a face view of a hoe-blade having an eye of somewhat different shape.

Referring to the first four figures ofthe drawings, to make the eye in the hoe, I first punch or stamp from a piece of sheet metal the blank or blade A ofthe hoe and form therein a centcr hole, I), for the eye, as shown in Figs. 1 and 3, said hole being made either at the same operation of stampingout the blade or bya sepa-- rate operation. I then heat the blank or blade A to a proper temperature and place it on a block or die, 13, which is depressed on the portion a of its face to leave a shoulder or raised portion, d, the configuration of which next to the portion 0 corresponds with the shape of the top or back end of the blade. Said die 13 has a lso a hole, 6, in it corresponding with the shape of the eye to be formed, and when the heated blank A is placed upon the depressed portion 0 of the die and held in position by the shoulder 11 the hole I) in itis directly over the center of the aperture 0. The raised portion of said die B not covered by the hoe-blank is flush with the upper surface of said blank when the latter is in its place on the die. An upper die or holder, 0, having an attached punch, D, whichis in line with the hole I), is

the hole I) to be spread or swaged and carried down into the aperture 0 and to conform to the shape of said aperture, which forms the eye f in the hoeblank. The shape of the aperture 6, in Fig. 2, is oval, and the shape of the punch is tapering, with a rounded point, and having a small shoulder, t, which passes nearly through the eye and assists in giving the eye its proper shape, as represented in Fig. 4. Fig.5 shows adifi'erent-shaped hoeeye, which, of course, will require the aperture 0 in the block to be of corresponding shape.

In order to form the eye of the hoe as herein described, it is necessary that the center hole, I), for the eye should be made before applying the punch, as otherwise it would not be possible to spread the metal with that regularity which is requisite; and itis furthermore necessary that the nose or point end of the punch should only just enter or fill and not pass through the hole I), without spreading the metal around it. The further or spreading action of the punch will then or afterward have the effect of first spreading the metal around the hole 1) into a shallow funnel shape, and subsequently of widening said hole and letting the punch gradually through it, in orby which part of the operation the metal will be pulled or stretched till the greater portion of the tapering part of the punch has passed through the blank, after which the punch, in its further progress, will act simply as a wedge to press the metal close against the walls of the aperture 0, leaving the hole of the eye of the hoe smooth and enlarged. The upper block or die, (3, fits snugly over the lower die, B, and is constructed with the inclined and end-beveled face (I, to assist in giving the blade of the hoe its proper shape and forming its cuttingedgc. Whenthe eye is made in the sheet of metal before stamping or cutting out the blank, then shoulder 11 on the lower die is omitted and the upper surface of said die'made flush.

The method of forming the eye herein described applies to hoes of various kinds, and produces an eye which gives a tighter hold on ally.

I am aware that it is not broadly new to make the eye of a hoefrom the blank ofwhich a easgzoa the handle than is customary in hoes generhole 6, as shown, whereby the eye may be swaged into shape, as described.

2; The combination ofthetwo dies B G, having the correspondingly-shaped faces 0 d, the 1 1 the blade is formed; but this has been done by face dbeing turned down near the end to bend a series of dies which operate successively upon it.

What I claim as new is 1. The punch D, made tapering in form, blunt at the end, and provided with the shoulder 1 in combination with the die B, having the blade and form the beveled edge, as described.

FERDINAND F. P. UNCKRICH. Witnesses:

JACOB KEENE,

E. FLEIDINGER. 

